1. David Alonso-Caneiro

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    1. Mentioned In 13 Articles

    2. Automatic choroidal segmentation in OCT images using supervised deep learning methods

      Automatic choroidal segmentation in OCT images using supervised deep learning methods
      The analysis of the choroid in the eye is crucial for our understanding of a range of ocular diseases and physiological processes. Optical coherence tomography (OCT) imaging provides the ability to capture highly detailed cross-sectional images of the choroid yet only a very limited number of commercial OCT instruments provide methods for automatic segmentation of choroidal tissue. Manual annotation of the choroidal boundaries is often performed but this is impractical ...
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    3. Posterior Choroidal Stroma Reduces Accuracy of Automated Segmentation of Outer Choroidal Boundary in Swept Source Optical Coherence Tomography

      Posterior Choroidal Stroma Reduces Accuracy of Automated Segmentation of Outer Choroidal Boundary in Swept Source Optical Coherence Tomography
      Purpose : To determine the influence of choroidal boundary morphology on the accuracy of automated measurements of subfoveal choroidal thickness (SFCT) in swept source optical coherence tomography (SSOCT). Methods : A retrospective image analysis of foveal-centered horizontal line scans from normal and diseased eyes using the Topcon DRI OCT-1 Atlantis SSOCT was conducted. Subfoveal choroid-scleral junction (CSJ) and retina-choroidal junction (RCJ) morphologies were graded by two observers. Automated SFCT (A-SFCT) was compared ...
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    4. Enhanced Visualization of Subtle Outer Retinal Pathology by En Face Optical Coherence Tomography and Correlation with Multi-Modal Imaging

      Enhanced Visualization of Subtle Outer Retinal Pathology by En Face Optical Coherence Tomography and Correlation with Multi-Modal Imaging
      Purpose To present en face optical coherence tomography (OCT) images generated by graph-search theory algorithm-based custom software and examine correlation with other imaging modalities. Methods En face OCT images derived from high density OCT volumetric scans of 3 healthy subjects and 4 patients using a custom algorithm (graph-search theory) and commercial software (Heidelberg Eye Explorer software (Heidelberg Engineering)) were compared and correlated with near infrared reflectance, fundus autofluorescence, adaptive optics ...
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    5. Tissue thickness calculation in ocular optical coherence tomography

      Tissue thickness calculation in ocular optical coherence tomography
      Thickness measurements derived from optical coherence tomography (OCT) images of the eye are a fundamental clinical and research metric, since they provide valuable information regarding the eyes anatomical and physiological characteristics, and can assist in the diagnosis and monitoring of numerous ocular conditions. Despite the importance of these measurements, limited attention has been given to the methods used to estimate thickness in OCT images of the eye. Most current studies ...
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    6. Choroidal thickness in myopic and non-myopic children assessed with enhanced depth imaging optical coherence tomography

      Choroidal thickness in myopic and non-myopic children assessed with enhanced depth imaging optical coherence tomography
      Purpose: To examine choroidal thickness (ChT) and its topographical variation across the posterior pole in myopic and non-myopic children. Methods: One hundred and four children aged 10-15 years of age (mean age 13.11.4 years) had ChT measured using enhanced depth imaging optical coherence tomography (OCT). Forty one children were myopic (mean spherical equivalent -2.41.5D) and 63 were non-myopic (mean +0.30.3D). ChT was assessed in ...
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    7. Non-invasive assessment of corneal crosslinking changes using polarization sensitive optical coherence tomography

      Non-invasive assessment of corneal crosslinking changes using polarization sensitive optical coherence tomography
      Collagen crosslinking (CXL) has shown promising results in the prevention of the progression of keratoconus and corneal ectasia. However, techniques for in vivo and in situ assessment of the treatment are limited. In this study, ex vivo porcine eyes were treated with a chemical CXL agent (glutaraldehyde), during which polarization sensitive optical coherence tomography (PS-OCT) recordings were acquired simultaneously to assess the sensitivity of the technique to assess changes in ...
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    8. Using Optical Coherence Tomography to Assess Corneoscleral Morphology After Soft Contact Lens Wear

      Using Optical Coherence Tomography to Assess Corneoscleral Morphology After Soft Contact Lens Wear
      Purpose. To evaluate the use of optical coherence tomography (OCT) for assessing the effect of different soft contact lenses on corneoscleral morphology. Methods. Ten subjects had anterior segment OCT B-scans taken in the morning and again after 6 h of soft contact lens wear. For each subject, three different contact lenses were used in the right eye on non-consecutive days, including a hydrogel sphere, a silicone hydrogel sphere, and a ...
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    9. Diurnal Variation of Retinal Thickness with Spectral Domain OCT

      Diurnal Variation of Retinal Thickness with Spectral Domain OCT
      Purpose. To investigate whether diurnal variation occurs in retinal thickness measures derived from spectral domain optical coherence tomography (SD-OCT). Methods. Twelve healthy adult subjects had retinal thickness measured with SD-OCT every 2 h over a 10 h period. At each measurement session, three average B-scan images were derived from a series of multiple B-scans (each from a 5 mm horizontal raster scan along the fovea, containing 1500 A-scans/B-scan) and ...
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    10. Feature Of The Week 11/6/11: Nicolaus Copernicus University Researchers Develop Technique to Study Biomechanical Properties of The Cornea Using OCT

      Feature Of The Week 11/6/11: Nicolaus Copernicus University Researchers Develop Technique to Study Biomechanical Properties of The Cornea Using OCT
      Researchers from Nicolaus Copernicus University have a long history of development of OCT in general and ophthalmology in particular. Recently NCU developed a technique to study the mechanical dynamics of the cornea using high speed OCT combined with an air puff system. Below is a summary of their work.We present a novel method and instrument for in vivo imaging and measurement of the human corneal dynamics during an air ...
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    11. Assessment of corneal dynamics with high-speed swept source Optical Coherence Tomography combined with an air puff system

      Assessment of corneal dynamics with high-speed swept source Optical Coherence Tomography combined with an air puff system
      ...f corneal dynamics with high-speed swept source Optical Coherence Tomography combined with an air puff system David Alonso-Caneiro, Karol Karnowski, Bartlomiej J. Kaluzny, Andrzej Kowalczyk, and Maciej Wojtkowski Optics ...
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    12. Corneal Topography: The Evolving Technology

      Corneal Topography: The Evolving Technology
      Here we look at the evolution, the current technology and the exciting future of this useful tool. The development of clinical tools for measuring corneal shape and understanding its impact on vision has a long history tied to early adoption of new technologies. There have been several recent developments that promise to greatly extend our ability to image and understand this most important ocular structure. Before we look forward, let ...
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  2. About David Alonso-Caneiro

    David Alonso-Caneiro

    David Alonso-Caneiro is in the School of Optometry at the Queensland University of Technology in Brisbane, Australia.